摘要
针对传统DC/DC逆变器升压能力有限,两极结构效率低的缺点,提出一种改进型高增益Z源逆变器,将传统的准Z源逆变器和DC/DC变换器结合,用升压单元代替储能电感,提升了系统的升压能力和整体的效率。根据空间矢量脉宽幅值调制原理,结合最大升压控制和恒功率控制,提出基于SVPWAM的调制策略,进一步提升了控制系统的适应性。通过MATLAB/Simulink进行建模仿真,结果表明所提逆变器及调制策略的有效性及可行性。
Aiming at the shortcomings of traditional DC/DC inverter with low boosting capacity and low efficiency of bipolar structure,an improved high gain Z source inverter is proposed.The traditional quasi Z source inverter and DC/DC converter are combined,With the boost unit instead of energy storage inductance,to enhance the system's ability to boost and overall efficiency.According to the principle of space vector pulse width amplitude modulation,combined with the maximum boost control and constant power control,the modulation strategy based on SVPWAM is proposed to further improve the adaptability of the control system.Simulation of MATLAB/Simulink are carried out.The results show that the proposed inverter and modulation strategy are effective and feasible.
作者
刘健
赵兴勇
康嘉超
卫晓强
LIU Jian;ZHAO Xing-yong;KANG Jia-chao;WEI Xiao-qiang(Department of Electric Power Engineering,Shanxi University,Taiyuan 030013 China)
出处
《自动化技术与应用》
2018年第6期91-96,共6页
Techniques of Automation and Applications
基金
国网山西省电力公司科技项目(编号05161A)
关键词
Z源逆变器
高增益
最大升压控制
SVPWAM
PQ控制
Z source inverter
high gain
maximum boost control
space vector pulse width amplitude modulation(SVPWAM)
PQ control
